concen: Central Concentration

Description

Calculates the central concentration based on input Sersic parameters.

Usage

1
concen(a, n)

Arguments

a

some inner radius (0 < a < 1)

n

Sersic index

Details

This function calculates the central concentration of a galaxy dependent upon its Sersic index. In order for this calculation to succeed, the outer radial extent of the galaxy must be normalised to 1, and some arbitrary inner radius in the range 0 < a < 1 (for example, a = 1/3) must be chosen.

Author(s)

Lee Kelvin, <lee.kelvin@uibk.ac.at>

References

Graham A. W., Driver S. P., 2005, PASA, 22, 118

See Also

The astronomy package: astro.


Questions? Problems? Suggestions? or email at ian@mutexlabs.com.

All documentation is copyright its authors; we didn't write any of that.